http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/232 2026-04-19T15:37:07Z 2026-04-19T15:37:07Z Htet ZH Chethana KWT Mapook A http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1644 2026-03-25T06:54:34Z 2026-03-25T00:00:00Z

Additions to Memnoniella Species (Stachybotryaceae) Associated with Bidens pilosa and Chromolaena odorata (Asteraceae) in Northern Thailand and Their Potential Antibacterial Properties Htet ZH; Chethana KWT; Mapook A Memnoniella species were isolated from Bidens pilosa and Chromolaena odorata in northern Thailand. Maximum likelihood and Bayesian inference analyses of the combined dataset of ITS, tef1-α, rpb2 and tub2 were conducted to confirm their taxonomic placement within Memnoniella. Updated phylogenetic analyses, together with detailed descriptions, and illustrations of the isolates are also presented. Based on the morphology and multi-gene phylogeny, Memnoniella chromolaenae, M. oblongispora, and M. longistipitata are synonymized under M. levispora. Additionally, we introduced M. asteracearum (MFLUCC 25-0166) as a new species and reported a new host record of M. levispora. This study also provides preliminarily evaluation of the antibacterial activity of Memnoniella species against three bacterial pathogens: Bacillus subtilis (TISTR 1248), Staphylococcus aureus (TISTR Y4b), and Escherichia coli (TISTR 527), revealing the strongest activity observed against B. subtilis (TISTR 1248). In addition, our study contributes to expand the understanding of weed-associated saprobic fungal diversity by documenting Memnoniella species on Bidens pilosa and Chromolaena odorata. บทความ (Article)

2026-03-25T00:00:00Z Jacob JKS dela Cruz TEE http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1643 2026-03-25T06:57:16Z 2026-03-25T00:00:00Z

Antagonistic Activities of Fungal Endophytes from Rhizophora mucronata Lamk. against Fusarium oxysporum Under Altered Nutrient Levels Jacob JKS; dela Cruz TEE Mangrove ecosystems harbor diverse fungal endophytes that are increasingly recognized as sources of bioactive metabolites with potential applications in sustainable agriculture. However, their antagonistic roles against phytopathogens under variable environmental conditions remain poorly understood. This study investigated the antagonistic activities of 16 fungal endophytes isolated from the mangrove Rhizophora mucronata against the fungal phytopathogen Fusarium oxysporum. These mangrove fungal endophytes, representing the genera Pestalotiopsis, Neopestalotiopsis, and Pseudopestalotiopsis, were isolated from both disturbed and undisturbed mangrove ecosystems and evaluated for antifungal activities using a dual culture assay. Our results revealed diverse antagonistic interactions, with Types C (inhibition upon contact) and E (mutual inhibition with subsequent overgrowth) being the most frequently observed, occurring in 9 of the 16 mangrove fungal endophytic isolates. Interaction Types B (mutual inhibition upon contact or at a distance) and D (mutual inhibition between fungi at a distance with clear zones larger than 2 mm) were also observed among the tested mangrove fungal endophytic isolates. The percent inhibition of F. oxysporum by the mangrove fungal endophytes ranged from 68% to 86%, with Pseudopestalotiopsis sp. isolated from undisturbed sites displaying the highest antagonism. We further examined these interactions under altered phosphate and zinc concentrations in the growth medium. Low phosphate levels enhanced fungal inhibition, promoting Type C interactions, whereas elevated phosphate concentrations reduced antagonism, shifting interactions toward Type E. Modifications to zinc concentration produced more consistent inhibitory effects, with interactions primarily classified as Types C and E. These findings suggest that environmental factors, particularly mineral availability, play a critical role in shaping the antagonistic potential of mangrove fungal endophytes against phytopathogens, underscoring their promise as sustainable biocontrol agents. บทความ (Article)

2026-03-25T00:00:00Z Aguilar J Abon M Kalaw S Dulay RM Reyes R http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1630 2026-02-25T06:28:44Z 2026-02-25T00:00:00Z

Mycelial growth and basidiocarp production of edible mushrooms on coconut waste-based substrates Aguilar J; Abon M; Kalaw S; Dulay RM; Reyes R Edible mushrooms are primarily cultivated for culinary purposes using agricultural waste. However, in some areas, these materials may not be readily available. This study explores the potential of coconut wastes as a substrate for mycelial growth and basidiocarp production in edible mushrooms. Coconut water from young and mature coconuts was used to assess mycelial growth performance, while coconut pulp was tested for its efficiency as a spawning material. For fruiting body production, varying formulations of rice straw and coconut coir dust were evaluated to identify the most suitable substrate for optimal productivity. Results revealed that Cyclocybe cylindracea, Pleurotus djamor, Pleurotus florida, and Pleurotus sajor-caju preferred mature coconut water gelatin. The mycelial growth of P. florida was optimal in media with a pH of 5–6, whereas the other species exhibited a broader pH tolerance. Coconut pulp demonstrated a comparable mycelial diameter to rice seeds as a spawning material. All the mushrooms favored substrates with a higher proportion of rice straw, as evidenced by a shorter incubation period and primordia initiation, larger cap sizes, and higher yields and biological efficiency. These findings highlight the efficiency of coconut wastes as viable alternative substrates for mushroom cultivation, demonstrating that optimal fruiting body production can be achieved with the appropriate substrate ratio. บทความ (Article)

2026-02-25T00:00:00Z Azirakhmet Z Zemlyanskaya I Novozhilov YK Shchepin O Nursafina A Bersimbayev R Schnittler M http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1629 2026-02-25T06:00:49Z 2026-02-25T00:00:00Z

A Checklist of Myxomycetes from Kazakhstan Azirakhmet Z; Zemlyanskaya I; Novozhilov YK; Shchepin O; Nursafina A; Bersimbayev R; Schnittler M This paper presents an annotated checklist of myxomycetes recorded from Kazakhstan, comprising 193 species accepted according to the current taxonomy. The checklist synthesizes data from a comprehensive evaluation of 26 relevant publications; species mentioned in these sources were treated as records unless explicitly referencing primary data of another study. Among the major vegetation zones, mountain coniferous forests where most diverse (115 taxa recorded), followed by forest steppe (87), semidesert (71), extra zonal forests in steppe (69), steppe (49), desert (48), and open mountain (25) biomes. Decaying wood was the most frequently reported substrate (157 records), closely followed by plant litter (155). Bark of living trees and shrubs (99) was also important, while living mosses (24) and dung (28) supported fewer, yet often highly specialized, species. Field surveys yielded 109 species, but an additional 48 species were detected via the moist chamber culture technique. Only 36 species were recovered at least once by both methods. These findings demonstrate that field surveys and moist chamber cultures complement each other, recovering distinct species assemblages. The latter method proved to be essential for detecting minute species, particularly those inhabiting desert environments. บทความ (Article)

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